Bottle closure



March 13, 1928. 1,662,239

H. DE WALLACE BOTTLE CLOSURE Filed March 18, 1927 Patented Mar. 13, 1928.

v UNITED STATES PATENT OFFICE.

HARRY WALLACE, OF SYRACUSE, NEW YORK, ASSIGNOR TO KLEEN KAI? COR- PORATION, 0F SYRACUSE, NEW YORK, CORPORATION OF NEW YORK.

\ BOTTLE cnosunn.

This invention relates to new and useful improvements in sanitary bottle closures, de signed for milk and other bottles, and has for its object toprovide a one-piece fibrous closure formed with a convex apron that over faces of the closure for facilitating the depressing of the central ortion into the recess, one of said creases Being formed in the top face of the closure adjacent the, periphery of the central portion for effecting an angular fold of the closure to conform to. the bottom of the recess; the other annular crease being formed in the bottom face of the,

closure within the convex apron for enabling the said apron to readily and snugly conform 'to and fit the bead of the mouth, the said closure beyond the smaller annular crease being formed with radial creases that enable the closure to contract without wrinkling when the closure is forcibly applied to the bottle month. And a further object is to provide a bottle closure of the character, that may be packed in magazines or other containers in close order and from which the closures may be fed singly towards the capping niachmes without interference from the adjacent closures. I

The various features and partsof the invention will be understood from the detailed description which follows, and byreference to the accompanying drawing, in which Figure 1 is an edge view of the fibrous disc fromwhich the closure is formed. Fig. 2 is a central vertical section, taken on line 2-2 of Fig. 5. Fig. 3 is a central vertical section showing the closure applied to a bottle ready to be forced into its month, by the capping plunger. Fig.4 is a similar view showing the closure seated in the recess of the mouth. Fig. 5 is a top plan view of the closure shown in Figs. 2 and 3. Fig. 6 is a top lan view of the closure shown Fig. 4. ig. 7 is a plan view of the closure, as

in Figs. 2 and 3, showing its top surface formed with radial creases. And Fig. 8 is a broken elevation of a magazine from which bottom t the closures are fed into the capping machine, showing the close stacking of the closures. All of clcarness.

In the drawing, 2 represents the neck of an ordinary milk or cream bottle, 3 is the mouth, the latter being surrounded by a flaring bead 3'. 4 represents the" recess of the mouth, and 5 is the usual annular ledge or seat, which supports the closure.

6 represents the closure, which consists primarily of a circular plane body of flexible fiber, generally known as pulp-board (see Fi 1). In manufacturing the closure, the body 2 is operated upon bydies, which may simultaneously, or by separate opera tions form or roll the convex marginal apron 6'. This leaves a central disc-shaped portion 6 which is larger in diameter than the bottom of the recess 4 (see Figs. 2 and 3). At the base or inner circumference of the primary apron of Figs. 2 and 3, the underthe views are enlarged for I side of the body is formed with an annular crease 6", and within and concentric to said crease a similar crease, as 6, is formed in led e 5.1 The creases 6 6 are preferably V-s aped and are so arranged that the fiber at either side of said creases may be bent or folded substantially at right angles, as shown at :0, in Fig. 4. Within and concentric to the crease 6 the central portion 6 is preferably formed with a convex annular rib 6. This rib is provided for stifienin the relatively thin medial portion of the c osure and the height of said rib is preferably equal to the elevation of the primary apron *6, shown in Figs. 2, 3 and 8. This latter provision enables a number of the closures to be stacked in magazines, or other containers,

'without interference from the adjacent closures. This feature will be understood by reference to Fig. 8. In this view, the magazine.7 is rovided with an opening 7 in its Eroughwhich the lowermost closure may be ejected in a well-known manner, by means of a shuttle-like ram or plunger, as 7. 'It will be also understood from Fig.

.8 that the annular ribs 6 tend to support the medial portions 6' of the closures, and

prevent the said portions from sinking into the shallow depressions indicated at 6, in Figs. 2 and 7. and eifecting the interlocking of the adjacent closures. By primarily molding the closures, asshown in Figs. 2, 3 and 7 the closures have a normal depth of less than one-eighth inch, which is very desirable, especially for storage, shipment and magazine feeding.

In order to facilitate the depressing of the medial portion 6 of the closure for effecting the close seating or contact of the closure with the recess of the bottle mouth, the primary discs 6 are preferably formed with a relatively large number of radial creases, as 6", as best seen in Fig. 7. The creases (J are necessary in order that the relatively large area lying between the rib 6 and the primary apron (5 may be suitably contracted and crowded into the recess 4, without causing wrinkles or other imperfections, as shown in Fig. 4, by the ordinary pressure exerted by the capping plunger, as 8. The creases 6 are preferably broader and deeper where they intersect with the crease 6, at which 1 point the contraction of the closure is greatest, in order to enable the fiber to be crowded into the narrowest part of the recess 4. The plane portion within the rib 6 may be utilized for printing the dairymcns names, or other information.

Having thus described my invention, what I claim, is-

In a bottle closure, :1 body having a plane disk-like central portion and an upwardly extending convex reinforcing rib defining the marginal edge of said central portion, said body having an upwardly facing annular V-shaped groove concentric with and spaced from said rib, said body having second V-shaped groove formed in its under face and concentric with the first named groove, and the portion of the body extending beyond the last named groove being formed to provide a relatively broad convex apron having inwardly extending radially disposed grooves overlying the second named groove and connecting with and terminating at the first named annular groove, all of said grooves forming weakened portions whereby the central portion of the body may be forced into the bottle mouth and the apron portion of the body conformed to overlie the head of the bottle.

In testimony whereof I afiix my signature.

HARRY DE WALLACE. 

